Wonders Technology Co.,Ltd, founded in 1999, has launched on the audio industry for over 19 year, from 5.1 to docking, to Bluetooth and Wi-Fi speakers, and we have always been in the forefront of the audio industry. Furthermore, we have developed a long term and stable cooperation with customers from all over the world, such as Bestbuy, Walmart, Carrefour, Testco, Sainsbury and so forth. At the same time, we have built our own brand- DOSS, which has gained a tremendous reputation in China and abroad, and has been in continuous growth for over 10 years.Pre-sale service:1. Logistics. Overseas warehouses: the United States, Spain, Russia, India 2.Overseas Warehouses lead-time: 2-5 working days.3.To provide the products introduction& Catalogue 4. MOQ: 1pcsIn-sale service: 1. To provide training opportunities for product's knowledge2. To supply displays and customized packing3. To provide certification information of products4. To provide details& service in marketing.After-sale service: 1. Quality:We promise that we can replace the products with defects and provide warranty service within one year.2. Unsalable sales: a. To reclaim in lower price.b. To offer assistance for sale,delivery directly for other distribution channels.3. 48 hours customer service is provided for the terminal buyers.Customer service is available in the United States.DOSS certificate: We have passed the certification of BSCI, MSDS, CE, FCC, ISO9001, UN38.3 etc